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A travels 15 km with a speed of 30 km/h....

A travels 15 km with a speed of 30 km/h. He travels another 25 km with a speed of 10km/h. What is his average speed for the entire journey?
A 15 km की दूरी को 30 km/h की चाल से तय करता है। वह 10 किमी /घंटा की गति के साथ 25 किमी की यात्रा और करता है। पूरी यात्रा के लिए उसकी औसत गति कया है?

A

`40/3` km/h

B

`80/3` km/h

C

20km/h

D

12 km/h

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